From Sino-Korean 素 (so) meaning "plain, simple", 昭 (so) meaning "bright, luminous" or 少 (so) meaning "few, little" combined with 妍/姸 (yeon) meaning "beautiful", 延 (yeon) meaning "stretch, prolong" or 娟 (yeon) meaning "beautiful, graceful". Other hanja combinations can form this name as well.